After Shi Feng swung his sword, everywhere its light passed through the abyssal rock wall was instantly transformed into crimson flames.
The appearance of the crimson flames immediately threw the entire space into turmoil, as if the flames were about to burn everything into nothingness.
The crimson flames instantly devoured the surrounding rock walls.
Boom!
With a deafening explosion, countless chunks of rock shattered. The rock wall space that had originally been half the size of a room was directly turned into a space the size of a small house, and the surrounding walls were as smooth as if they had been polished...
"So strong!"
Looking at the suddenly opened cavern before him, Shi Feng could not hide his astonishment.
He had only intended to give it a try, yet he had actually managed to use it. Although the Sacred Devour he used now was far inferior to the Azure Saint's second sword and could even be called incomplete, its power was absolutely close to that of an advanced Legendary attack.
With such destructive power, his efficiency in opening a path to the inheritance fragment would increase by several dozen times.
Just as Shi Feng prepared to use Sacred Devour again, however, his head suddenly spun and even began to ache, as though he had overworked his mind before.
"Is Sacred Devour still too much for me right now?" Shi Feng said with a bitter smile.
Although he had indeed managed to use Sacred Devour, the mental strain was like using more than a dozen Bronze Combat Techniques at once. The consumption was simply terrifying.
After only three or four uses, his mental strength would be completely drained. And that was only because his mental level had reached Tier 4. If it had not, that previous attack alone would likely